Abstract
The efficacy of chemical control of stem rot (caused by Sclerotium rolfsii) of peanut (Arachis hypogaea) relies partially on increasing deposition and residual activity in the lower canopy. Tebuconazole (0.21 kg a.i./ha, four applications) and azoxystrobin (0.31 kg a.i./ha, two applications) were each applied on peanut plants in daylight or at night, when leaves were folded, in two Tifton, GA, field trials in 2007. Both timings of each fungicide provided similar control of early leaf spot (caused by Cercospora arachidicola). Night applications of azoxystrobin and tebuconazole reduced stem rot at digging and increased yield compared with day applications. Night applications of tebuconazole were also tested in Nicaragua from 2005 to 2007. Peanut plants had less stem rot, similar levels of rust (caused by Puccinia arachidis), and higher yield with night applications than with day applications. Residual activity of azoxystrobin and tebuconazole were improved on the bottom shaded leaves (on which fungicides would be better deposited with night application) compared with top, sun-exposed leaves (where most fungicide would be deposited with a day application) according to a bioassay with S. rolfsii. Increased fungicide residual activity within the bottom canopy may increase fungicide efficacy on stem rot and augment peanut yield.
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Claims 11
Claim · model-written summary
Day and night applications of both fungicides controlled early leaf spot similarly.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- Both timings of each fungicidee0
- Interactor
- Cercospora arachidicolaMycosphaerella arachidise0pathogen
- Outcome
- control of early leaf spote0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both timings of each fungicide provided similar control of early leaf spot (caused by Cercospora arachidicola).”
t0“Peanut Fungicides”
Claim · model-written summary
Night azoxystrobin applications reduced peanut stem rot relative to day applications.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Night applications of azoxystrobine0
- Interactor
- Sclerotium rolfsii
Agroathelia rolfsiie0pathogen - Outcome
- stem rot at digginge0
- Direction
- reducede0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficacy of chemical control of stem rot (caused by Sclerotium rolfsii) of peanut (Arachis hypogaea) relies partially on increasing deposition and residual activity in the lower canopy. Tebuconazole (0.21 kg a.i./ha, four applications) and azoxystrobin (0.31 kg a.i./ha, two applications) were each applied on peanut plants in daylight or at night, when leaves were folded, in two Tifton, GA, field trials in 2007. Both timings of each fungicide provided similar control of early leaf spot (caused by Cercospora arachidicola). Night applications of azoxystrobin and tebuconazole reduced stem rot at digging and increased yield compared with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
Night tebuconazole applications reduced peanut stem rot relative to day applications.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Night applications of azoxystrobin and tebuconazolee0
- Outcome
- stem rot at digginge0
- Direction
- reducede0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night applications of azoxystrobin and tebuconazole reduced stem rot at digging and increased yield compared with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
Night azoxystrobin applications increased peanut yield relative to day applications.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Night applications of azoxystrobine0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night applications of azoxystrobin and tebuconazole reduced stem rot at digging and increased yield compared with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
Night tebuconazole applications increased peanut yield relative to day applications.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Night applications of azoxystrobin and tebuconazolee0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night applications of azoxystrobin and tebuconazole reduced stem rot at digging and increased yield compared with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
In Nicaragua, night tebuconazole applications lowered stem rot relative to day applications.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- night applicationse0
- Outcome
- stem rote0
- Direction
- lesse0
- Comparator
- day applicationse0
- Setting
- Nicaraguae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Night applications of tebuconazole were also tested in Nicaragua from 2005 to 2007. Peanut plants had less stem rot, similar levels of rust (caused by Puccinia arachidis), and higher yield with night applications than with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
In Nicaragua, night tebuconazole applications gave similar peanut rust levels to day applications.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- night applicationse0
- Interactor
- Puccinia arachidis
Puccinia arachidise0pathogen - Outcome
- ruste0
- Direction
- similare0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanut plants had less stem rot, similar levels of rust (caused by Puccinia arachidis), and higher yield with night applications than with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
In Nicaragua, night tebuconazole applications increased peanut yield relative to day applications.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- night applicationse0
- Outcome
- yielde0
- Direction
- highere0
- Comparator
- day applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peanut plants had less stem rot, similar levels of rust (caused by Puccinia arachidis), and higher yield with night applications than with day applications.”
t0“Peanut Fungicides”
Claim · model-written summary
Azoxystrobin residual activity against S. rolfsii was greater on bottom shaded than top exposed peanut leaves.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- bottom shaded leavese0
- Interactor
- S. rolfsiiAgroathelia rolfsiie0pathogen
- Outcome
- Residual activity of azoxystrobine0
- Direction
- improvede0
- Comparator
- top, sun-exposed leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Residual activity of azoxystrobin and tebuconazole were improved on the bottom shaded leaves (on which fungicides would be better deposited with night application) compared with top, sun-exposed leaves (where most fungicide would be deposited with a day application) according to a bioassay with S. rolfsii.”
t0“Peanut Fungicides”
Claim · model-written summary
Tebuconazole residual activity against S. rolfsii was greater on bottom shaded than top exposed peanut leaves.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- bottom shaded leavese0
- Interactor
- S. rolfsiiAgroathelia rolfsiie0pathogen
- Outcome
- Residual activity of azoxystrobin and tebuconazolee0
- Direction
- improvede0
- Comparator
- top, sun-exposed leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Residual activity of azoxystrobin and tebuconazole were improved on the bottom shaded leaves (on which fungicides would be better deposited with night application) compared with top, sun-exposed leaves (where most fungicide would be deposited with a day application) according to a bioassay with S. rolfsii.”
t0“Peanut Fungicides”
Claim · model-written summary
The authors suggested increased fungicide residual activity in the bottom canopy may improve stem rot efficacy and peanut yield.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- increase fungicide efficacy on stem rot and augment peanut yielde0
- Qualifier
- Increased fungicide residual activity within the bottom canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased fungicide residual activity within the bottom canopy may increase fungicide efficacy on stem rot and augment peanut yield.”
t0“Peanut Fungicides”
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See all 8 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.